diff --git a/CLAUDE.md b/CLAUDE.md
index f55f2d8..2653581 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -1,6 +1,6 @@
 # Claude Instructions
 
 ## Working Directory
-Always work directly on `main`. Do **not** create worktrees or feature branches unless explicitly asked.
+Always work directly on `master` — this repo has no `main`. Do **not** create worktrees or feature branches unless explicitly asked.
 
 The project root is `D:\Development\market-dev\autotrader-firms\autotrader`.